USGS Streamgage 13305310
Lemhi River below L5 Diversion near Salmon, ID
Lemhi River below L5 Diversion near Salmon, ID is USGS streamgage 13305310 in Idaho, monitoring river discharge in hydrologic subbasin 17060204. It drains a watershed of about 1,216 square miles. Discharge records at this site go back to 1992. Typical flow runs near 125.1 cfs in July and 252.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Idaho
- Drainage area
- 1,216 sq mi
- Subbasin (HUC-8)
- 17060204
- Coordinates
- 45.13278, -113.79889
- USGS site number
- 13305310
- Records begin
- 1992-11-18 (34 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 32 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 183.7 | 239.9 | 317.2 | |
| February | 192.4 | 250 | 328.1 | |
| March | 193.6 | 286.9 | 419.5 | |
| April | 55.7 | 252.6 | 415 | |
| May | 44.6 | 254.7 | 628.1 | |
| June | 124.7 | 483 | 1,426.7 | |
| July | 24.3 | 125.1 | 644.9 | |
| August | 14.5 | 26.4 | 139 | |
| September | 20.4 | 35 | 142.1 | |
| October | 65.1 | 215.5 | 348.7 | |
| November | 215.5 | 293.4 | 394.7 | |
| December | 188.9 | 249.6 | 323.1 |
All values in cubic feet per second (cfs).